查询词典 double angle formula

The static model of torsion joint is based on that of bending joint. The effects of structure parameters inside air pressure, initial angle, rube average radius, rube shell thickness on the turning angle are analyzed and the following conclusions are drawn: the relationship between the angle of torsion joint and the inside air pressure is basically linear, the angle of torsion joint increases with the initial angle and rube average radius, the angle of torsion joint decreases while the rube shell thickness increases. The kinetic equation is built for torsion joint. Simulating experiment implies that the time of inflating and deflating process is extremely shorter than that of kinetic process. So the pneumatic process can be ignored in actual system design and control. The factors that affect the dynamic features of torsion joint, such as shell thickness of rubber tube, average radius, initial angle, connector's outlet area, moment of inertia and viscous damping coefficient, are analyzed and the following conclusions are drawn: the change of rube shell thickness has no effects on the dynamic process of FPA inside air pressure while greatly affects the turning angle of torsion joint; when the rube shell thickness is small, the torsion joint has a bigger turning angle, no overshoot and long risetime, when the shell thickness is big, the turning angle of torsion joint is small, but has high response speed, overshoot and low shock; when the rube average radius increases, the turning angle of torsion joint increases and the overshoot increases too; when the initial angle of torsion joint is big, the turning joint is big, the overshoot is small and shock is low, but the risetime is big; the connector's outlet area affects the dynamic process of FPA inside air pressure greatly, but has no effects on the dynamic process of turning angle; moment of inertia and viscous damping coefficient have no effects on the dynamic process of FPA inside air pressure, but affect the dynamic process of turning angle greatly.

在弯曲关节模型推导的基础上，建立扭转关节的静态模型，并分析了扭转关节内腔压力，初始转角，橡胶管平均半径，橡胶管壁厚等参数对关节转角的影响，得出扭转关节的转动角度与充入FPA内腔的压缩气体压力之间基本呈线性关系，扭转关节的转角随初始角度和橡胶管平均半径的增大而增大，扭转关节的转角随橡胶管壁厚的增大而减小的结论；建立了扭转关节的动力学方程，仿真实验表明FPA的充放气过程与扭转关节的动力学过程相比时间极短，在实际系统设计和控制过程中可以忽略不计；分析讨论橡胶管壁厚，平均半径，初始角度，气体节流口面积，转动惯量，粘性阻尼系数等因素对扭转关节动态特性的影响，得出橡胶管初始壁厚的变化对扭转关节FPA内腔压力的动态响应几乎没有影响而对关节转角的响应曲线影响比较明显，壁厚较小时，关节可以得到较大的转角，并且转角的响应曲线没有超调，但上升时间长，壁厚较大时，关节转角变小，响应加快，但是有超调和轻微振荡现象，橡胶管平均半径越大，得到的关节转角越大，但是转角响应的超调量也随之增大，FPA的初始角度越大，关节的转角越大，并且超调量减小，振荡减弱，但是上升时间增大，管接头出口面积的大小对关节FPA内腔压力的建立过程影响较大，但对关节转角的动态响应几乎没有影响，转动惯量和粘性阻尼系数对FPA内腔压力的动态过程几乎没有影响而对扭转关节转角有较大影响等结论。

The main technical parameters which decide the movement speed are the ankle angle of the support leg, the horizontal velocity, the hip angle and the support leg's hip joint angle, knee angle and the former support distance at the moment of contact, and the latter leg's hip joint angle, the upper arm's movement scope, the support leg's knee angle, the swing knee's angle, the support leg's hip angle at landing phase, and the ankle angle, the support leg's hip angle, the swing velocity of the former leg, the hip angle of the swing leg and the angle of the landing knee at the pushing phase.

我国优秀男子百米途中跑着地瞬间对动作速度起主要贡献的技术指标是：支撑腿的踝关节角、着地瞬间脚的水平速度、大腿夹角及支撑腿的髋角、膝角和前支撑距离；垂直缓冲瞬间是摆动腿髋关节角、上臂前摆幅度、支撑腿和摆动腿膝关节角、支撑腿髋关节角；后蹬瞬间是踝关节角、支撑腿髋关节角、大腿前摆角速度、摆动腿的髋角及支撑腿膝角。

To eliminate abnormity wear of tires in double-front-axle system of heavy truck, the kinematics and dynamics analysis method is set forth. On the base of the results for heavy double-front-axle truck load distributing and manipulate stability, tire uniformity load condition and deficiency steering characteristic condition of heavy double-front-axle truck are put forward. Steering trapezia space movement formula, double-swing-arm space movement formula and double-swing-arm movement formula in actual status of heavy double-front-axle truck are fetched. Optimization models of steering trapezia and double-swing-arm are founded and optimization arithmetics of transmission system in double-front-axle steering are compiled.

本文以消除重型汽车双前桥转向系统轮胎异常磨损等为目的，阐述了双前桥转向系统的运动学、动力学分析方法；在分析了双前桥重型汽车载荷分布和操纵稳定性的基础上，提出了双前桥重型汽车轮胎均载应该满足的条件、双前桥重型汽车具备不足转向特性应该满足的条件；推导了双前桥转向梯形空间运动关系式、双摇臂机构空间运动关系式和双前桥汽车实际工况下的运动关系式，建立了转向梯形和双摇臂机构优化设计模型，编制了双前桥转向传动系统优化算法。

At the same time , we discuss the determinism and nondeterminism of formula-clock automata and the closure propertied under Boolean operation of the language which is accepted by formula-clock automata. We also prove the expressive equivalence between the deterministic formula-clock automata and the nondeterministic formula-clock automata. This means that every nondeterministic formula-clock automata can be transformed to a deterministic formula-clock automata which exactly accept the timed language identified by the fomer.We also extend timed words to infiniteness and define the formula-clock Buchi automata and the formula-clock Muller automata. At last, we show its application in formal verification and modeling of real-time system.

然后讨论了公式时钟自动机的确定性和非确定性，公式时钟自动机识别的语言类在并、交、补运算下的封闭性；并证明了确定的公式时钟自动机和非确定的公式时钟自动机表达能力的等价性，这意味这每一个非确定的公式时钟自动机都能转换为一个与之识别相同时间语言的确定的公式时钟自动机；我们将时间字扩展为无穷的，从而定义了公式时钟Buchi自动机与公式时钟Muller自动机；最后给出了用它进行实时系统的形式化验证方面及对实时系统建模的应用。

Firstly, this paper discusses the development actuality of the research on double-front axle steering system and power-train of automobile. Based on the structure of the design experiences from others, the kinematics formula of double-front axle steering system is fetched, and the mathematical model of optimization design of double rocking arms mechanism and steering trapezium mechanism is established by space geometry method. Considering the difference between the real steering angle from wheels and the ideal steering angle from the ideal formula as the objective function, the optimization design method of double-front axle steering system is presented.

本文首先论述了国内外对汽车双前桥转向系统和动力传动系统研究的发展状况，在总结前人研究设计经验的基础上推导出汽车双前桥转向系统运动学关系，运用空间几何法建立了双前桥双摇臂机构及转向梯形机构优化的数学模型，以转向轮实际转角值与理想公式求出的理想转角值之间的误差达到最小为目标函数，提出了双前桥转向系统参数的优化设计方法。

In this paper, Newton iteration formula for computing normal depth and critical depth was put forward by mathematical transformation of uniform flow equation and critical flow equation of circular section tunnel. Then, the relationship between the corresponding central angle and the introduced parameters was analyzed. An approximate formula for angle was obtained according to optimal uniform approximation principle. Using this approximate formula as initial value of iteration formula, a direct formula for calculating normal depth and critical depth of circular section tunnel was established after its first iterative.

该文通过对圆形断面均匀流方程与临界流方程的数学变换，分别得到其正常水深与临界水深的牛顿迭代公式，同时，通过对正常水深与临界水深对应的中心角与引入参数之间关系的分析及数值计算，利用最优一致逼近原理分别得到了正常水深与临界水深对应中心角的近似计算式，并以此近似计算式为初值，用迭代方程进行一次迭代得到了圆形断面均匀流水深与临界流水深的直接计算公式。

Initially the following measures are taken for association of the angle positions to physical reflectors, and for determination of the position of the vehicle (10): i at least three angle values with a suitable distribution over the search sector is selected, ii the angle values are associated to reflectors and a position is determined for the vehicle on the basis of the known position of the assumed reflectors, iii if the vehicle position determined in this way is within a certain part of the transport area the other angle values are associated to reflectors, iv for each angle value, existing deviation is determined between detected angle values and angle values expected between the vehicle position and known reflectors, v the measures taken are repeated for each possible combination of selected angle values.

最初使用下列步骤使这些角位与反射器关联以便确定车辆（10）的位置：i）在该搜索扇形上选择至少三个合适分布的角度值，ii）使各角度值与各反射器关联，根据假设反射器的已知位置确定车辆的位置，iii）如果如此确定的车辆位置在该运输区的某一部分中，则使其他角度值与反射器关联，iv）对于每一角度值，确定所检测角度值与车辆位置与己知反射器之间预期角度值之间的偏差，v）对于所选择的角度值的每一种可能组合反复进行这些步骤。

A method is provided for panoramic video stabilization by using an angle sensor, which comprises the following steps of (1) obtaining an initial rotation angle by using the collecting unit of the angle sensor before video capturing;(2) allowing the angle sensor to work synchronously with a video capturing device, and obtaining the rotation angle data of each frame of captured panoramic video;(3) if the video capturing device jitters or rotates, calculating the difference between the rotation angle of the current video frame and the initial rotation angle;(4) correcting the current video frame by using the calculated difference in rotation angle, thereby implementing the video stabilization of the panoramic video capturing device.

一种利用角度传感器纠正全景视频采集抖动的方法，其步骤为：(1)在视频采集前，先使用角度信息采集单元获取一个初始旋转角度信息；(2)在视频采集过程中，角度传感器与视频采集装置同步运动，每采一帧全景视频都获取所采这帧的旋转角度信息；(3)如果全景视频采集设备发生抖动或旋转，计算出当前所采的视频帧的旋转角度信息与初始旋转角度信息的差值；(4)利用这个旋转角度信息的差值对当前所采的视频帧进行纠正，实现全景视频采集设备视频抖动的处理。

But the value of H angle is smaller than class I malocclusion . Campared with the data of class II malocclusion , for class III malocclusion there are significant differences in LsL , LiL , lower lip angle of inclination , mentolabial sulcus angle , H angle , upper lower lip angle , Ns-Sn-Ls . For class III malocclusion the value of LsL is shoter than class II malocclusion , but the value of LiL is longer than class II malocclusion . The value of lower lip angle of inclination , mentolabial sulcus angle , upper lower lip angle is bigger than class II malocclusion .

安氏Ⅱ类错合患者与安氏Ⅲ类错合患者相比，在上唇长、下唇长、上唇倾角、下唇倾角、颏唇沟角、H角、上下唇角和软组织轮廓这些指标有显著性差异；安氏Ⅱ类错合患者的上唇长比安氏Ⅲ类错合患者的长、安氏Ⅱ类错合患者的下唇长比安氏Ⅲ类错合患者的短；安氏Ⅱ类错合患者的上唇倾角和H角比安氏Ⅲ类错合患者的大，安氏Ⅱ类错合患者的下唇倾角、颏唇沟角和上下唇角比安氏Ⅲ类错合患者的小。

After rectifying the family structure, and educational level of parents, the influencing factor of adaptability was formula mainly; intensity of reaction was breastfeeding duration for 4-6 months and breast milk mainly; rhythmicity was breastfeeding duration for 7-9 months and formula only; activity level was both breast milk an formula milk equally and breastfeeding duration for 7-9 months; quality of mood was formula only and duration of breastfeeding for 7-9 months; approach-withdrawal was breast milk mainly and both breast milk and formula milk equally; distractibility was formula milk mainly.

校正家庭结构、父母亲受教育水平等因素后，适应度的影响因素是主要喂奶粉；反应强度的影响因素是母乳喂养持续时间4~6个月和主要喂母乳；规律性的影响因素是母乳喂养持续时间7~9个月和只喂奶粉；活动水平的影响因素是母乳与奶粉等量和母乳喂养持续时间7~9个月；情绪本质的影响因素是只喂奶粉和母乳喂养持续时间7~9个月；趋避性的影响因素是主要喂母乳和母乳与奶粉等量；注意分散的影响因素是主要喂奶粉。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。